Perineal artery

Last revised by Craig Hacking on 21 Sep 2021

The perineal artery arises from the internal pudendal artery and supplies some of the perineal musculature and external genitalia.


  • Origin: branches off the internal pudendal artery, arising at the level of the posterior angle of the perineal membrane
  • Branches: it has two branches:
    • a transverse perineal branch
    • a terminal posterior scrotal (male) or labial (female) artery 1 
  • Course: pierces the perineal membrane at its origin, traveling in the superficial perineal pouch to reach the scrotum or labia
  • Anastomosis: the transverse perineal branch anastomoses with the inferior rectal arteries, posterior scrotal artery and the contralateral transverse perineal artery 2
  • Supply
    • Perineal artery:​ bulbospongiosus and ischiocavernosus muscles
    • ​Transverse perineal branch: transverse perinei superficialis muscles, perineal body and the posterior bulb of the penis
    • Posterior scrotal artery: posterior scrotal skin and dartos muscle
    • Posterior labial artery: skin of labia majora and labia minora 2,3

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Cases and figures

  • Figure 1: internal pudendal artery (Gray's illustrations)
    Drag here to reorder.